Anatomy Chapters 2 & 3 Flashcards
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Questions and Answers

The steroid that tends to be deposited in arterial walls when it is excessively abundant in blood is?

cholesterol

Correct organic macromolecule for steroids, amino acids, polysaccharides, and RNA?

  • Carbohydrates
  • Proteins
  • Lipids (correct)
  • Nucleic Acids
  • A molecule composed of two fatty acids and a phosphate group attached to glycerol is a?

    phospholipid

    What organelle helps the cell assemble proteins?

    <p>ribosomes</p> Signup and view all the answers

    The membrane forming the outer edge of the cytoplasm is the?

    <p>plasma membrane</p> Signup and view all the answers

    The most abundant inorganic compound in the body is?

    <p>water</p> Signup and view all the answers

    Cell parts are also called?

    <p>organelles</p> Signup and view all the answers

    The form of carbohydrates transported in the blood is?

    <p>glucose</p> Signup and view all the answers

    Correct organic macromolecule for adipose tissue, antibodies, monosaccharides, and nucleotides?

    <p>Lipids</p> Signup and view all the answers

    Correct organic macromolecule for glucose, DNA, glycerol, and enzyme?

    <p>Lipids</p> Signup and view all the answers

    DNA and RNA are examples of large molecules called?

    <p>nucleic acids</p> Signup and view all the answers

    The solvent in which the chemical reactions of life occur is?

    <p>water</p> Signup and view all the answers

    The organic base found only in DNA is?

    <p>thymine</p> Signup and view all the answers

    Excess nutrients are usually stored in the body as?

    <p>triglycerides</p> Signup and view all the answers

    Correct organic molecule for fatty acids, peptide bonds, phospholipids, and starch?

    <p>Lipids</p> Signup and view all the answers

    Triglycerides, phospholipids, and steroids belong to the class of compounds known as?

    <p>lipids</p> Signup and view all the answers

    The class of organic compounds that are formed of amino acids is?

    <p>proteins</p> Signup and view all the answers

    The cell nucleus contains instructions for protein synthesis encoded in the?

    <p>DNA of chromosomes</p> Signup and view all the answers

    The storage form of carbohydrates in the body is?

    <p>glycogen</p> Signup and view all the answers

    Correct organic macromolecules for genetic material, sugars, hemoglobin, and triglycerides?

    <p>Nucleic acid</p> Signup and view all the answers

    Energy for immediate cellular use is provided by?

    <p>ATP</p> Signup and view all the answers

    Glucose, fructose, and ribose are?

    <p>monosaccharides</p> Signup and view all the answers

    A molecule composed of glycerol and three fatty acids is a?

    <p>triglyceride</p> Signup and view all the answers

    ATP differs from ADP in containing?

    <p>3 phosphate groups</p> Signup and view all the answers

    The organelles that are the sites of ATP production are the?

    <p>mitochondria</p> Signup and view all the answers

    The semiliquid substance located between the nucleus and the cell membrane is the?

    <p>cytoplasm</p> Signup and view all the answers

    The structural and functional units of the body are?

    <p>cells</p> Signup and view all the answers

    The class of organic compounds that are the primary source of nutrient energy for the body is?

    <p>carbohydrates</p> Signup and view all the answers

    Sex hormones and cholesterol are examples of a class of lipids known as?

    <p>steroids</p> Signup and view all the answers

    The class of lipids forming a major part of cell membranes is?

    <p>phospholipids</p> Signup and view all the answers

    Organic molecules are distinguished by containing?

    <p>carbon and hydrogen</p> Signup and view all the answers

    Study Notes

    Macromolecules

    • Cholesterol: A steroid that can accumulate in arterial walls when present in high blood levels.
    • Organic Macromolecules:
      • Lipids: Include steroids and triglycerides.
      • Proteins: Made of amino acids, crucial for various cellular functions.
      • Carbohydrates: Serve as the body's main source of energy, transported as glucose.
      • Nucleic Acids: Include DNA and RNA, key for genetic information.

    Cell Structure and Function

    • Phospholipid: Composed of two fatty acids, a phosphate group, and glycerol; essential for cell membranes.
    • Ribosomes: Organelles responsible for protein assembly.
    • Plasma Membrane: The outer membrane that encloses the cytoplasm of the cell.
    • Water: The most abundant inorganic compound in the body; serves as a solvent for biochemical reactions.

    Cell Components

    • Organelles: Internal structures within cells that perform specific functions.
    • Nucleus: Contains DNA that encodes protein synthesis instructions.

    Energy Storage and Usage

    • Triglycerides: Stored excess nutrients, composed of glycerol and three fatty acids.
    • ATP (Adenosine Triphosphate): Provides immediate energy for cellular functions; contains three phosphate groups.
    • Mitochondria: Organelles where ATP is produced through cellular respiration.

    Types of Carbohydrates

    • Monosaccharides: Simple sugars like glucose, fructose, and ribose.
    • Glycogen: Storage form of carbohydrates in the body, mainly in the liver and muscle.

    Lipids and Their Functions

    • Lipids: Include triglycerides, phospholipids, and steroids; important for energy storage, cell membrane structure, and hormone production.
    • Phospholipids: Major components of cell membranes, providing a barrier and fluidity to cells.
    • Steroids: Include hormones and cholesterol, vital for various physiological functions.

    Nutrient Types and Composition

    • Organic Molecules: Characterized by the presence of carbon and hydrogen.
    • Classifications:
      • Lipids: Fatty acids, triglycerides, phospholipids.
      • Proteins: Made from amino acids; include enzymes and antibodies.
      • Carbohydrates: Sugars and starches; primary energy source.

    Genetic Material

    • Nucleic Acids: DNA and RNA are essential for heredity and protein synthesis; DNA contains thymine, while RNA does not.

    Summary of Key Terms

    • Cells: Basic structural and functional units of life.
    • Cytoplasm: Semi-liquid substance between the nucleus and the cell membrane where organelles are suspended.

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    Test your knowledge of key concepts from Anatomy Chapters 2 and 3 with these flashcards. Each card defines essential terms and concepts related to organic macromolecules and their functions in the body. Great for study sessions and quick reviews!

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